public boolean addGeneratedClosureConstructorCall(ConstructorCallExpression call) {
ClassNode classNode = controller.getClassNode();
if (!classNode.declaresInterface(ClassHelper.GENERATED_CLOSURE_Type)) return false;
AsmClassGenerator acg = controller.getAcg();
OperandStack operandStack = controller.getOperandStack();
MethodVisitor mv = controller.getMethodVisitor();
mv.visitVarInsn(ALOAD, 0);
ClassNode callNode = classNode.getSuperClass();
TupleExpression arguments = (TupleExpression) call.getArguments();
if (arguments.getExpressions().size() != 2)
throw new GroovyBugError(
"expected 2 arguments for closure constructor super call, but got"
+ arguments.getExpressions().size());
arguments.getExpression(0).visit(acg);
operandStack.box();
arguments.getExpression(1).visit(acg);
operandStack.box();
// TODO: replace with normal String, p not needed
Parameter p = new Parameter(ClassHelper.OBJECT_TYPE, "_p");
String descriptor =
BytecodeHelper.getMethodDescriptor(ClassHelper.VOID_TYPE, new Parameter[] {p, p});
mv.visitMethodInsn(
INVOKESPECIAL, BytecodeHelper.getClassInternalName(callNode), "<init>", descriptor, false);
operandStack.remove(2);
return true;
}
protected void evaluateCompareExpression(
MethodCaller compareMethod, BinaryExpression expression) {
Expression leftExp = expression.getLeftExpression();
TypeChooser typeChooser = controller.getTypeChooser();
ClassNode cn = controller.getClassNode();
ClassNode leftType = typeChooser.resolveType(leftExp, cn);
Expression rightExp = expression.getRightExpression();
ClassNode rightType = typeChooser.resolveType(rightExp, cn);
boolean done = false;
if (ClassHelper.isPrimitiveType(leftType) && ClassHelper.isPrimitiveType(rightType)) {
BinaryExpressionMultiTypeDispatcher helper =
new BinaryExpressionMultiTypeDispatcher(getController());
done = helper.doPrimitiveCompare(leftType, rightType, expression);
}
if (!done) {
AsmClassGenerator acg = controller.getAcg();
OperandStack operandStack = controller.getOperandStack();
leftExp.visit(acg);
operandStack.box();
rightExp.visit(acg);
operandStack.box();
compareMethod.call(controller.getMethodVisitor());
ClassNode resType = ClassHelper.boolean_TYPE;
if (compareMethod == findRegexMethod) {
resType = ClassHelper.OBJECT_TYPE;
}
operandStack.replace(resType, 2);
}
}
private void evaluateCompareTo(BinaryExpression expression) {
Expression leftExpression = expression.getLeftExpression();
AsmClassGenerator acg = controller.getAcg();
OperandStack operandStack = controller.getOperandStack();
leftExpression.visit(acg);
operandStack.box();
// if the right hand side is a boolean expression, we need to autobox
Expression rightExpression = expression.getRightExpression();
rightExpression.visit(acg);
operandStack.box();
compareToMethod.call(controller.getMethodVisitor());
operandStack.replace(ClassHelper.Integer_TYPE, 2);
}
public void storeVar(BytecodeVariable variable) {
MethodVisitor mv = controller.getMethodVisitor();
int idx = variable.getIndex();
ClassNode type = variable.getType();
// value is on stack
if (variable.isHolder()) {
doGroovyCast(type);
box();
mv.visitVarInsn(ALOAD, idx);
mv.visitTypeInsn(CHECKCAST, "groovy/lang/Reference");
mv.visitInsn(SWAP);
mv.visitMethodInsn(
INVOKEVIRTUAL, "groovy/lang/Reference", "set", "(Ljava/lang/Object;)V", false);
} else {
doGroovyCast(type);
if (type == ClassHelper.double_TYPE) {
mv.visitVarInsn(DSTORE, idx);
} else if (type == ClassHelper.float_TYPE) {
mv.visitVarInsn(FSTORE, idx);
} else if (type == ClassHelper.long_TYPE) {
mv.visitVarInsn(LSTORE, idx);
} else if (type == ClassHelper.boolean_TYPE
|| type == ClassHelper.char_TYPE
|| type == ClassHelper.byte_TYPE
|| type == ClassHelper.int_TYPE
|| type == ClassHelper.short_TYPE) {
mv.visitVarInsn(ISTORE, idx);
} else {
mv.visitVarInsn(ASTORE, idx);
}
}
// remove RHS value from operand stack
remove(1);
}
private void doConvertAndCast(ClassNode targetType, boolean coerce) {
int size = stack.size();
throwExceptionForNoStackElement(size, targetType, coerce);
ClassNode top = stack.get(size - 1);
targetType = targetType.redirect();
if (targetType == top) return;
if (coerce) {
controller.getInvocationWriter().coerce(top, targetType);
return;
}
boolean primTarget = ClassHelper.isPrimitiveType(targetType);
boolean primTop = ClassHelper.isPrimitiveType(top);
if (primTop && primTarget) {
// here we box and unbox to get the goal type
if (convertPrimitive(top, targetType)) {
replace(targetType);
return;
}
box();
} else if (primTop) {
// top is primitive, target is not
// so box and do groovy cast
controller.getInvocationWriter().castToNonPrimitiveIfNecessary(top, targetType);
} else if (primTarget) {
// top is not primitive so unbox
// leave that BH#doCast later
} else {
controller.getInvocationWriter().castToNonPrimitiveIfNecessary(top, targetType);
}
MethodVisitor mv = controller.getMethodVisitor();
if (primTarget
&& !ClassHelper.boolean_TYPE.equals(targetType)
&& !primTop
&& ClassHelper.getWrapper(targetType).equals(top)) {
BytecodeHelper.doCastToPrimitive(mv, top, targetType);
} else {
top = stack.get(size - 1);
if (!WideningCategories.implementsInterfaceOrSubclassOf(top, targetType)) {
BytecodeHelper.doCast(mv, targetType);
}
}
replace(targetType);
}
private void evaluateInstanceof(BinaryExpression expression) {
OperandStack operandStack = controller.getOperandStack();
expression.getLeftExpression().visit(controller.getAcg());
operandStack.box();
Expression rightExp = expression.getRightExpression();
ClassNode classType;
if (rightExp instanceof ClassExpression) {
ClassExpression classExp = (ClassExpression) rightExp;
classType = classExp.getType();
} else {
throw new RuntimeException(
"Right hand side of the instanceof keyword must be a class name, not: " + rightExp);
}
String classInternalName = BytecodeHelper.getClassInternalName(classType);
controller.getMethodVisitor().visitTypeInsn(INSTANCEOF, classInternalName);
operandStack.replace(ClassHelper.boolean_TYPE);
}
/** load the constant on the operand stack. */
public void pushConstant(ConstantExpression expression) {
MethodVisitor mv = controller.getMethodVisitor();
Object value = expression.getValue();
ClassNode origType = expression.getType().redirect();
ClassNode type = ClassHelper.getUnwrapper(origType);
boolean boxing = origType != type;
boolean asPrimitive = boxing || ClassHelper.isPrimitiveType(type);
if (value == null) {
mv.visitInsn(ACONST_NULL);
} else if (boxing && value instanceof Boolean) {
// special path for boxed boolean
Boolean bool = (Boolean) value;
String text = bool ? "TRUE" : "FALSE";
mv.visitFieldInsn(GETSTATIC, "java/lang/Boolean", text, "Ljava/lang/Boolean;");
boxing = false;
type = origType;
} else if (asPrimitive) {
pushPrimitiveConstant(mv, value, type);
} else if (value instanceof BigDecimal) {
String className = BytecodeHelper.getClassInternalName(value.getClass().getName());
mv.visitTypeInsn(NEW, className);
mv.visitInsn(DUP);
mv.visitLdcInsn(value.toString());
mv.visitMethodInsn(INVOKESPECIAL, className, "<init>", "(Ljava/lang/String;)V", false);
} else if (value instanceof BigInteger) {
String className = BytecodeHelper.getClassInternalName(value.getClass().getName());
mv.visitTypeInsn(NEW, className);
mv.visitInsn(DUP);
mv.visitLdcInsn(value.toString());
mv.visitMethodInsn(INVOKESPECIAL, className, "<init>", "(Ljava/lang/String;)V", false);
} else if (value instanceof String) {
mv.visitLdcInsn(value);
} else {
throw new ClassGeneratorException(
"Cannot generate bytecode for constant: " + value + " of type: " + type.getName());
}
push(type);
if (boxing) box();
}
public void evaluateEqual(BinaryExpression expression, boolean defineVariable) {
AsmClassGenerator acg = controller.getAcg();
CompileStack compileStack = controller.getCompileStack();
OperandStack operandStack = controller.getOperandStack();
Expression rightExpression = expression.getRightExpression();
Expression leftExpression = expression.getLeftExpression();
ClassNode lhsType =
controller.getTypeChooser().resolveType(leftExpression, controller.getClassNode());
if (defineVariable
&& rightExpression instanceof EmptyExpression
&& !(leftExpression instanceof TupleExpression)) {
VariableExpression ve = (VariableExpression) leftExpression;
BytecodeVariable var =
compileStack.defineVariable(
ve, controller.getTypeChooser().resolveType(ve, controller.getClassNode()), false);
operandStack.loadOrStoreVariable(var, false);
return;
}
// let's evaluate the RHS and store the result
ClassNode rhsType;
if (rightExpression instanceof ListExpression && lhsType.isArray()) {
ListExpression list = (ListExpression) rightExpression;
ArrayExpression array =
new ArrayExpression(lhsType.getComponentType(), list.getExpressions());
array.setSourcePosition(list);
array.visit(acg);
} else if (rightExpression instanceof EmptyExpression) {
rhsType = leftExpression.getType();
loadInitValue(rhsType);
} else {
rightExpression.visit(acg);
}
rhsType = operandStack.getTopOperand();
boolean directAssignment = defineVariable && !(leftExpression instanceof TupleExpression);
int rhsValueId;
if (directAssignment) {
VariableExpression var = (VariableExpression) leftExpression;
if (var.isClosureSharedVariable() && ClassHelper.isPrimitiveType(rhsType)) {
// GROOVY-5570: if a closure shared variable is a primitive type, it must be boxed
rhsType = ClassHelper.getWrapper(rhsType);
operandStack.box();
}
// ensure we try to unbox null to cause a runtime NPE in case we assign
// null to a primitive typed variable, even if it is used only in boxed
// form as it is closure shared
if (var.isClosureSharedVariable()
&& ClassHelper.isPrimitiveType(var.getOriginType())
&& isNull(rightExpression)) {
operandStack.doGroovyCast(var.getOriginType());
// these two are never reached in bytecode and only there
// to avoid verifyerrors and compiler infrastructure hazzle
operandStack.box();
operandStack.doGroovyCast(lhsType);
}
// normal type transformation
if (!ClassHelper.isPrimitiveType(lhsType) && isNull(rightExpression)) {
operandStack.replace(lhsType);
} else {
operandStack.doGroovyCast(lhsType);
}
rhsType = lhsType;
rhsValueId = compileStack.defineVariable(var, lhsType, true).getIndex();
} else {
rhsValueId = compileStack.defineTemporaryVariable("$rhs", rhsType, true);
}
// TODO: if rhs is VariableSlotLoader already, then skip crating a new one
BytecodeExpression rhsValueLoader = new VariableSlotLoader(rhsType, rhsValueId, operandStack);
// assignment for subscript
if (leftExpression instanceof BinaryExpression) {
BinaryExpression leftBinExpr = (BinaryExpression) leftExpression;
if (leftBinExpr.getOperation().getType() == Types.LEFT_SQUARE_BRACKET) {
assignToArray(
expression,
leftBinExpr.getLeftExpression(),
leftBinExpr.getRightExpression(),
rhsValueLoader);
}
compileStack.removeVar(rhsValueId);
return;
}
compileStack.pushLHS(true);
// multiple declaration
if (leftExpression instanceof TupleExpression) {
TupleExpression tuple = (TupleExpression) leftExpression;
int i = 0;
for (Expression e : tuple.getExpressions()) {
VariableExpression var = (VariableExpression) e;
MethodCallExpression call =
new MethodCallExpression(
rhsValueLoader, "getAt", new ArgumentListExpression(new ConstantExpression(i)));
call.visit(acg);
i++;
if (defineVariable) {
operandStack.doGroovyCast(var);
compileStack.defineVariable(var, true);
operandStack.remove(1);
} else {
acg.visitVariableExpression(var);
}
}
}
// single declaration
else if (defineVariable) {
rhsValueLoader.visit(acg);
operandStack.remove(1);
compileStack.popLHS();
return;
}
// normal assignment
else {
int mark = operandStack.getStackLength();
// to leave a copy of the rightExpression value on the stack after the assignment.
rhsValueLoader.visit(acg);
TypeChooser typeChooser = controller.getTypeChooser();
ClassNode targetType = typeChooser.resolveType(leftExpression, controller.getClassNode());
operandStack.doGroovyCast(targetType);
leftExpression.visit(acg);
operandStack.remove(operandStack.getStackLength() - mark);
}
compileStack.popLHS();
// return value of assignment
rhsValueLoader.visit(acg);
compileStack.removeVar(rhsValueId);
}